2019-05-25T15:03:25Zhttps://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1125612019-02-21T07:13:17Zcom_10261_88com_10261_8col_10261_34100925njm 22002777a 4500dcTaranu, Zofia E.authorGregory- Eaves, IreneauthorLeavitt, P. R.authorBunting, L.authorBuchaca, TeresaauthorCatalán, JordiauthorDomaizon, IsabelleauthorGuilizzoni, PieroauthorLami, A.authorMcGowan, S.authorMoorhouse, HeatherauthorMorabito, G.authorPick, Frances R.authorStevenson, Mark A.authorThompson, Patrick L.authorVinebrooke, Rolf D.author2015Increases in atmospheric temperature and nutrients from land are thought to be promoting the
expansion of harmful cyanobacteria in lakes worldwide, yet to date there has been no quantitative
synthesis of long-term trends. To test whether cyanobacteria have increased in abundance over
the past ~ 200 years and evaluate the relative influence of potential causal mechanisms, we synthesised
108 highly resolved sedimentary time series and 18 decadal-scale monitoring records from
north temperate-subarctic lakes. We demonstrate that: (1) cyanobacteria have increased significantly
since c. 1800 CE, (2) they have increased disproportionately relative to other phytoplankton,
and (3) cyanobacteria increased more rapidly post c. 1945 CE. Variation among lakes in the rates
of increase was explained best by nutrient concentration (phosphorus and nitrogen), and temperature
was of secondary importance. Although cyanobacterial biomass has declined in some managed
lakes with reduced nutrient influx, the larger spatio-temporal scale of sedimentary records
show continued increases in cyanobacteria throughout the north temperate-subarctic regions.Ecology Letters : doi: 10.1111/ele.12420 (2015)1461-023Xhttp://hdl.handle.net/10261/11256110.1111/ele.124201461-0248PaleolimnologyRegression treeAnthropoceneClimate changeCyanobacteriaEutrophicationLong-term trendsMeta-analysisAcceleration of cyanobacterial dominance in north temperatesubarctic lakes during the Anthropocene